A031939 - OEIS

A031939

Upper prime of a difference of 20 between consecutive primes.

907, 1657, 3109, 3433, 3967, 5737, 5923, 6007, 6823, 7669, 8263, 8563, 8803, 8887, 9277, 10243, 10453, 10687, 11047, 11113, 11197, 11467, 11617, 11677, 11887, 12007, 13147, 13441, 13669, 14107, 14197, 15493, 16963, 17539, 17827

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..35.

Index entries for primes, gaps between

FORMULA

a(n) = A031938(n)+20.

MATHEMATICA

Prime[Select[Range[2, 5000], Prime[ # ] - Prime[ # - 1] == 20 &]] (* Stefan Steinerberger, May 14 2006 *)

CROSSREFS

Cf. A031937.

Sequence in context: A350852 A195987 A216468 * A253228 A134075 A316679

Adjacent sequences: A031936 A031937 A031938 * A031940 A031941 A031942

KEYWORD

nonn

AUTHOR

Jeff Burch

STATUS

approved